该算法首先对恢复的初始三角形网格进行区域分割和边界重构,将隐式曲面的三角形网格分离出来,然后对恢复的隐式曲面表面的初始逼近网格从3个方面进行优化:即将初始逼近网格的曲率控制与网格面的拓扑一致性调整;调整网格顶点法矢与交互式分割;补偿网格抽样率。 3. The extraction procedure consists of two steps: segmenta...
We start with an additive group, discover a ring structure, and in case we get an integral domain, our ring allows a quotient field. Now, zero is a zero divisor, hence outside the set of elements we can construct quotients for; at least not by the usual method ab∼st⟺a⋅t=b...
There are infinitely many square root functions on the ring Z integers in the sense of Definition 3.8. It seems reasonable to say “let x be a square root function”. In practice, however, that is far too liberal. By choosing the principal square root one finds a function which is holomo...
At a broader level, the activity of the Z-ring can be thought of as a change in the shape of the cell from a cylinder to two hemispherical shapes. FtsZ is not the only protein that is implicated in cell shape changes. MreB and RodZ are proteins that form helical filaments underneath ...
Despite this, the intracellular concentration of FtsZ does not vary greatly during the cell cycle. The initiation of cell division is instead regulated both spatially and temporally at the level of Z ring assembly, by an array of accessory proteins that can modulate the polymerization of FtsZ. ...
hypothesized arrangement and connections between different components. Interactions between PDV1, PDV2, and ARC5 have not been experimentally demonstrated. In order to show the protein interactions, ARC6 molecules are shown as separated from one another, although the ARC6 ring appears to be ...
Adams D W, Errington J (2009). Bacterial cell division: assembly, maintenance and disassembly of the Z ring. Nat Rev Microbiol, 7(9): 642–653 ArticlePubMedCASGoogle Scholar Addinall S G, Lutkenhaus J (1996). FtsA is localized to the septum in an FtsZ-dependent manner. J Bacteriol...
P. et al. A septin double ring controls the spatiotemporal organization of the ESCRT machinery in cytokinetic abscission. Curr. Biol. 29, 2174–2182.e7 (2019). CAS PubMed Google Scholar Liu, T. L. et al. Observing the cell in its native state: imaging subcellular dynamics in ...
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FtsL is also shown to be required for septation during sporulation, and depletion of FtsL blocks the activation but not the synthesis of the prespore-specific sigma factor, 蟽F. Immunofluorescence microscopy shows that depletion of FtsL has little or no effect on FtsZ ring formation, but the...